We used to use them a lot . Is it the petrol driven rubber tracked type ? If you are using it for concrete etc tilt the load forward so its level with the slope and doesn't slop out when going up hill . They go uphill well . Be careful Iv'e seen a few accidents with them . Try looking on utube for "petrol tracked wheelbarrow " or similar.

(quote author=657A786A4747130 link=1366882068/0#0 date=1366882068]can anyone who owns or has used a motorized wheelbarrow tell me if it is any good to go uphill (25% to 35% slope) on a narrow rocky path?
we want to buy one, but we are not sure about it being able to do the job.
thanks!!!![/quote]