useless trivia: What Word Means: A Doughnut?

Questions

The first car with a non-U.S. nameplate to be classified as U.S. domestic.?

The first double-decker bus was introduced in this city.?

The first president to ride in an auto; he didn't care for it much.?

The Stutz-Bearcat is this type of car.?

1980's Apple II 6502 ran at 2MHz. Where is 1995's PowerPC 604 clocked at?