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The GM Fishbowl: The Story of America's Most Iconic Bus

Proton Bus Mods Research Team 8 min read
A 1966 GM New Look Fishbowl transit bus, showing its rounded six-piece windshield, photographed in Lethbridge, Canada.

If you've seen an old American movie set in a city, you've seen a Fishbowl. For the better part of two decades the GM "New Look" was simply the bus across the United States and Canada — the silver, ribbed, round-windowed machine that hissed up to the kerb in every downtown from Toronto to Los Angeles. Officially it was the New Look. Everyone called it the Fishbowl, and the nickname tells you exactly why it's remembered.

It's also a wonderful thing to drive in a simulator, because two of its defining traits — the wraparound windshield and the wail of its two-stroke diesel — are precisely what a sim puts you closest to. Here's the story.

One windshield, one nickname

General Motors launched the New Look in 1959 — "introduced in 1959 by the Truck and Coach Division of General Motors." What made it unmistakable was the glass: it's "commonly known by the nickname 'Fishbowl' (for its original six-piece rounded windshield)." That huge curved screen wrapped around the front of the bus, flooding the cab with light and giving the driver a goldfish-bowl panorama of the street. After decades of upright, slab-fronted buses, the New Look looked like the future had arrived.

A 1966 GM New Look Fishbowl bus showing the curved six-piece windshield and ribbed aluminium body.
The shape that named it: a 1966 GM New Look. The big rounded six-piece windshield is the "fishbowl" — light, airy, and unmistakable. Photo: dave_7, CC BY 2.0, via Wikimedia Commons.

An American icon by the numbers

The Fishbowl wasn't just pretty — it was everywhere. "44,484 New Look buses were built over the production lifespan, of which 33,413 were built in the U.S. and 11,071 were built in Canada." Underneath the aluminium it was genuinely clever: "it used an airplane-like stressed-skin construction in which an aluminum riveted skin supported the weight of the bus" — the body itself was the structure, like an aircraft fuselage, which kept it light and tough.

A preserved DC Transit GMC Fishbowl bus number 1400 in heritage green-and-white livery at a 2018 bus event.
Still loved: a preserved DC Transit Fishbowl in its classic heritage livery. Enough survive that they're a fixture at transit heritage events. Photo: Swagging, CC BY-SA 4.0, via Wikimedia Commons.

The sound: a two-stroke that screamed

Close your eyes near a working Fishbowl and you'd know it instantly. "Virtually all New Look buses were powered by Detroit Diesel Series 71 two-cycle diesel engines" — a two-stroke diesel, which fires twice as often as the four-stroke engines in almost every modern bus. The result is that famous high-revving, almost-screaming Detroit Diesel wail, a mechanical voice completely unlike the low diesel rumble you hear today. For a generation of North Americans, that sound simply was the sound of a city bus.

The end of an era — and what came next

Nothing lasts forever. "Production of the New Look in the U.S. ceased in 1977, when it was replaced by the RTS transit bus," though Canada kept building Fishbowls all the way to 1985. The torch then passed down a line of North American transit buses that runs straight to today's fleets — the modern equivalent being the kind of bus we decode in our guide to New Flyer Xcelsior codes. And the high, stepped floor that every Fishbowl had? That was swept away within a generation by the low-floor revolution — the Fishbowl is a perfect snapshot of the high-floor era that came before.

Driving the Fishbowl in the simulator

This is a bus that rewards first-person driving more than almost any other, because its character lives in the two places a sim puts you: the seat and the speakers. That wraparound six-piece windshield gives a field of view no flat-glass modern bus matches — you sit inside the bowl, glass curving away on both sides. And the two-stroke Detroit Diesel soundtrack turns an ordinary pull-away into an event. Add the old-school high floor with steps up from the kerb — the opposite of today's step-free buses — and driving a Fishbowl feels like operating a piece of living history.

The driver's dashboard and curved windshield inside a 1966 GM New Look Fishbowl bus.
From the seat: the curved glass wraps around the driver, the "fishbowl" view that makes this bus such a treat in first person. Photo: dave_7, CC BY 2.0, via Wikimedia Commons.
The passenger interior of a 1966 GM New Look Fishbowl bus with vintage seating.
The saloon of a 1966 New Look — mid-century transit, preserved. Photo: dave_7, CC BY 2.0, via Wikimedia Commons.

There's no Fishbowl in the catalog yet, but if vintage buses are your thing, the classic Mercedes-Benz O-371 Monobloco scratches the same heritage itch from the Brazilian side, and you can browse the rest of the North American bus mods for the lineage the Fishbowl founded.

FAQ

Why is the GM New Look bus called the "Fishbowl"?
Because of its windshield. The New Look launched in 1959 with a large, rounded six-piece windshield that wrapped around the front of the bus, giving the driver a panoramic "goldfish bowl" view. The nickname stuck even after later versions switched to a four-piece screen.
What engine did the Fishbowl use, and why does it sound like that?
Virtually all New Looks used a Detroit Diesel Series 71 two-cycle (two-stroke) diesel. A two-stroke fires twice as often as the four-stroke engines in modern buses, which gives the Fishbowl its distinctive high-revving, screaming exhaust note rather than a low rumble.
When did they stop making the GM New Look?
US production ended in 1977, when GM replaced it with the RTS. Canadian production continued until 1985. In total more than 44,000 New Looks were built, and enough survive to be common sights at transit heritage events.

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