Turning grass clipings into a fuel?

Question

for cars lawnmowers bigrigs offroadin

Answer 1

Feed them to a horse. Better still get the horse to graze on the grass before you cut it.

Ride the horse or get it to pull a cart.

A little old fashioned but it works.

Why a high tech solution?

Answer 2

You could if you could mimic the biological process that cows use, then you could use the grass clippings to create methane.

Answer 3

Sure, it can be done.  Any carbon containing material can be converted to fuel via gasification followed by FT synthesis.  It would just cost more than conventional fuels.