I have a few curious cheat codes for SR 2000:
To activate them, type in a special driver name from the list below
after selecting 'New driver' for the OTHER driver - ie to use the cheats
on driver 1, select 'New driver 2'.  If you have entered them correctly
the border should go funny for a second.

Note that case IS important.

SkiptraX - skip to next track
AardvarK - auto qualify as 1st, 2nd or 3rd (random)
XtraWonga - sets your cash level to #50,000
BettaCar - Improves tyres, engine

A note about the BettaCar cheat - Although the percentages for tyres
and engine do not change, your car goes faster and sticks to the road
better.  **This even works in Killer!**  (although choosing gears is
somewhat more difficult than usual)

A note about all the cheats - they are saved with the driver information
when saving drivers - no need to type in 'BettaCar' every time you
want to grind your best friend into the dust at Killer!  Just load in a 
pre-prepared driver (evil laugh ;-)

(Geek note: I got the above after I managed to crash the program by 
accelerating backwards in a tight circle until the screen went funny)

Have fun in Killer!    Glacky aka James Gregory