Steve begs Carl, a professional police officer, to teach him how to drive. Carl reluctantly agrees, but Steve’s clumsiness and lack of skill quickly push Carl toward a "Rage Breaking Point".
Carl is struggling with stress-related high blood pressure and adopts a relaxation technique—chanting " 3-2-1, 1-2-3, what the heck is bothering me? "—to keep his cool. [S4E3] Driving Carl Crazy
During the end credits, the entire cast is shown squeezing out of the tiny car, much like a circus clown car act. Steve begs Carl, a professional police officer, to
In a secondary story, Harriette begins taking piano lessons from a handsome young instructor. This sparks intense jealousy in Carl, further adding to the stress he is trying to manage. Episode Legacy "—to keep his cool
"Family Matters" Driving Carl Crazy (TV Episode 1992) - IMDb
The climax occurs when Steve accidentally shifts into reverse and crashes the Isetta through the Winslows' garage door. While Carl initially uses his mantra to stay calm, the situation escalates when the garage shelves collapse, causing even more damage and finally causing Carl to explode in rage. Subplot: Romantic Rivalry
Steve Urkel acquires a tiny BMW Isetta (his uncle Cecil actually paid him $50 to take it). He hopes the car will help him win over Laura, who claimed she’d go steady with the next boy who had his own car.