In "edit driver" in build mode, use the following names:
Fast Mode: FSTFRWRD
Grapple power ups only: RPCRNLY
Reversed rocket racer run track: LNFRRRM
Rocket Car: FLYSKYHIGH
Use the following codes as a name for your racer and test drive:
nmrchts: disable cheats
nchsss: drive with no chassis
ndrvr: drive with no driver
nslwj: drive with no slowing down
nwhls: drive with no wheels
mxpmx: maximum power-ups always
flyskyhgh: non stop double rockets
pgllgrn: play with only green power-ups
pgllrd: play with only red power-ups
pgllyll: play with only yellow power-ups