the circle and lightning bolt company!
Opel
Opel
Many companies incorporate a lightning bolt in their logo. They vary from a surf board company called Lightning Bolt to electric companies, Good Seal Plastic Tape etc. It's a pretty standard symbol.
Opel
Converse.
Volks Wagen
it is the car company volvo :-)
Its actually the History Channel (I thought it was a car logo too!)
I believe the logo you are talking about is on the Hyundai Tuscany. It is what the Tiburon is called in the US. Same car, different name.
Alfa romeo i believe
None, but some Volkswagen owners replace their circular VW logo with an aftermarket circular dragon logo.