David Letterman's - Top 10 reasons why there are no black NASCAR drivers.

10) HAVE TO SIT UPRIGHT WHILE DRIVING.

9) PISTOL WON'T STAY UNDER FRONT SEAT IN THE TURNS.

8 ) ENGINES DROWN OUT THE RAP MUSIC.

7) PIT CREW CAN'T WORK ON CAR WITH ONE HAND WHILE HOLDING UP PANTS WITH THE OTHER.

6) THEY KEEP TRYING TO CARJACK DALE EARNHARDT JR. WHEN HE PITS.

5) POLICE CARS ON TRACK INTERFERE WITH RACE.

4) NO PASSENGER SEAT FOR THE HO.

3) THERE ARE NO SPONSORS FOR CADILLAC.

2) CAN'T WEAR HELMET SIDEWAYS.

AND THE NUMBER 1 REASON WHY BLACKS AREN'T IN NASCAR:

1) WHEN THEY CRASH THEIR CAR THEY BAIL OUT AND RUN.