ok, if range and top speed limited, then sure, though I would assume it is a timed event and more power is better to a degree (as is less weight), and batteries/accumulators have really bad power/energy to weight compared to fuel.
plus a 10hp ish engine running a generator running an inverter running a motor pushing a rock crawler geared to be able to climb rocks sounds very unlikely to be able to maintain 30mph. I'm thinking maybe 8mph, especially if the tires are a bit deflated for traction.
fyi the hydrodynamic rock crawler has been done:
HydroDynamic Rock Buggy - Four Wheeler Magazine