The Cannonball Run (1981 comedy film)

The Cannonball Run is a 1981 comedy film starring Burt Reynolds, Roger Moore, Dom DeLuise, Farrah Fawcett, and an all-star supporting cast. It was directed by Hal Needham and distributed by 20th Century Fox. 

Race teams have gathered in Connecticut to start a cross-country car race. One at a time, teams drive up to the starters' stand, punch a time card to indicate their time of departure, then take off.

Adrienne Barbeau and Tara Buckman as Marcie Thatcher and Jill Rivers, satin-Spandex-clad "hotties" in a black Lamborghini Countach. 

Jill Rivers (Tara Buckman) and Marcie Thatcher (Adrienne Barbeau), two attractive women who use their looks to their advantage, start the race in a black Lamborghini Countach. Jill and Marcie use sex appeal as their weapon, unzipping their race suits to display copious amounts of cleavage during traffic stops. (However, this fails to work on a busty female traffic officer played in a cameo appearance by actress Valerie Perrine.)