 In the first show broadcast in the 1980 s,Flo (Polly Holliday) is dating a big rig trucker named Sy. When she finds out that he s taken on a young,female driving partner,she becomes jealous. She then asks Alice (Linda Lavin) to teach her how to drive a semi-truck. Alice s late husband was a driver as well. Along with Vera (Beth Howland),they pile into Sy s rig while he and his partner are in Mel s eating. What follows is a very funny driving lesson,Flo honking & yelling out the window at guys and then the big finish. When returning to Mel s diner,Flo goes to step on the break but instead hits the gas pedal! The semi plows straight through the front of Mel s Diner! The audience loved it,as did I,it s my favorite of the whole series.(happipuppi13)