jalopy

kottero, rotisko puhekieltä An old, dilapidated vehicle.
1979, Jack Kerouac, On the road, page 3:

Dean is the perfect guy for the road because he was actually born on the road, when his parents were passing through (w) in 1926, in a jalopy, on their way to (w).

There's only a rough track and I doubt if that jalopy of yours will make it.