I'm thinking of the
grease pit in the movie California Kid.
If you lay a 2x4 across both ramps you gain lift and the ramps won't slide. The front of my Superbeetle is so low it's like the 'dark' side of the Moon. I made extension wedges from 16" lengths of 2x8 that had lag bolts on the under, upper side that slot into holes in the ramp. If I was serious about it, I'd make metal wedges that hinge 180° for storage. Not time for that.
Not that there is oil to change under the front of a Superbeetle, anyways.