Byron Carter’s innovative friction drive system gave the Cartercar what the company boldly advertised as “A Thousand Speeds.” Using two perpendicular friction disks, the Model D eliminated many of the era’s common mechanical troubles: no clutch to slip, no gears to strip, no universal joints to break, and no shaft drive to twist.
The friction drive featured replaceable paper fiber rims that could be renewed every 4,000 miles for about five dollars, less than half the cost of maintaining a conventional geared transmission.
Visually, the 1908 Model D Roadster stood out with its striking brass Rushmore Searchlight headlamps, complemented by Corcoran brass side and taillamps. A Rushmore carbide generator sat neatly beside the driver’s seat, while diamond-pattern buttoned black leather seats offered armchair-like comfort. A simple folding black canvas top provided basic weather protection, though the car had no windshield.
By 1908, Cartercar had sold around 325 units. However, Byron Carter’s untimely death from pneumonia in April that year marked the beginning of the company’s decline. General Motors acquired Cartercar in late 1909 and continued production until 1915.
Today, fewer than 30 examples of the Cartercar are known to survive, making the Model D a rare and fascinating piece of automotive history. Here is a collection of beautiful photos showcasing the elegant 1908 Cartercar Model D Roadster in all its gearless glory.
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