Sure - you could rent it for a day or a weekend. They come small or big... we used to have a rather big one growing up, cuz mom had a big garden, it was a little scary to operate but it gets the job done fast :~D
There are some jobs you can bust your butt all weekend and not get very far, or rent a machine and do the same thing in an hour.... rototilling is one of them. :~D
Sounds like they could be scary-and-fun, both. But considering it took me HOURS to get a tiny patch cleared back home, a rototiller would definitely be worth it!
Vroom indeed...
I just use a shovel and do a little bit at a time....need the exercise.
I've got a Mants tiller, but you don't use it to break ground.