Favourites:
-Infurnus (fastest car in game)
-NRG 500 (fastest bike in game)
-Jetpack (because you use it in the interior universe, one of my favourte things!)
-Flying cars cheat (cus any car with that cheat is faster than the Hydra, even a perennial or clover!)
Worst:
Euros (cus it was so damned hard to find)
Mower (cus it's slow)
Sweeper (cus it's slow)
Boats (cus they suck)