Driving me round the Benz

Saw this in a car park today and sang a verse of the Janis Joplin song as I returned to my ol' jalopy....

Oh Lord, won't you buy me a Mercedes Benz ?
My friends all drive Porsches, I must make amends.
Worked hard all my lifetime, no help from my friends,
So Lord, won't you buy me a Mercedes Benz ? 

That's it!