My worst car was probably my first car. It was a 74 Mercury Capri. It was originally my sisters first car and then handed down to me. (Hmm...my brothers first car was my dad's Corvette and then a brand new truck)
Anyway, the Capri did not have radio or heat/ac. However, when you stepped on the gas pedal that thing would sh!# and get!!!
One windy February morning when I was still in high school I had gone out to warm up my car. While I'm sitting in it I began to smell smoke. I looked around and saw flames coming up near the passenger side front tire. I quickly tried to unbuckle my seat belt, which occasionally got stuck. Oh, I panicked but finally got out of the seat belt and ran inside to wake up my parents. My dad had it out before the volunteer firefighters arrived. We lived out in the country, only volunteer manned stations. What happened was the plastic gas line broke and leaked gas on the flattened cardboard boxes someone had placed in my parking spot.
So then I drove it around for about another year with a huge burn mark on the side.