1. How many brands of transportation products can you name that were built in Pontiac?

At least 36, many of which were absorbed by one manufacturer, General Motors:

Standard Carriage

R V Taylor (carriages)

Cloonan Wagon

Union Buggy

Dunlap (carriages)

Pontiac Buggy

Pontiac Spring and Wagon

O J Beaudette

CarterCar

Olympian

Friend

Pontiac (orig high wheeler)

Pontiac Tractor

Flanders Motorcycle

Whizzer

Welch

Monroe

Columbia

Engler

Flanders Electric

Clarkspeed

Lincoln Truck

Rapid

GMC

Yellow Cab

Yellow Truck

Yellow Knight

Oakland

Pontiac

Chevrolet

Oldsmobile

Buick

Cadillac

Opel

Vixen