Two things come to mind for me. One is, what happens if the thing goes airborne which would probably be likely. Two is, the plastic molded seat is supported by a single pole, which would be embedded in your back if the thing goes 0-100 in 1 second.

I imagine you'd have to duck the Patriot Act in order to use a jet pack. I mean, they had a problem with shipping of model rocket engines (although I think they're revising that one), I can't imagine they'd be too cool with people whizzing around with liquid fueled rockets strapped to their backs. Just think what a suicide bomber could do with one of those and 100 # of C-4 strapped on as well.

I can see the interview on a local news station:

"Well, it all started when I was 9, and I'd tied these bottle rockets on this plastic race car I had. You know, the Thunderbirds was always my favorite show, and they had rockets coming out of everything, so..."

"...and I'll always remember Muffy, and the way she looked at me as I tied her tail down. Y'know, to keep it out of the flame's path..."

"...Mom, she said she didn't like it that I kept doing this, but dad always used to tell me that I should reach for the stars, and I always took him literally..."

"...finding a new college was difficult. The damage to the administration hall was rather noticable and made the evening news, so it was well-known that I was into this sort of thing..."

"...and when the creditors began calling and the medical bills started piling up, I realized had to find a way to pay them off. Then my buddy here, he comes up with the idea that we should sell these things to other people..."

Welcome cweekly!
Dave , are you starting a gang?:D

I happen to someone I could give one of these to.

He he he he he he - ahem. I think it would make a nice birthday present.

He he he he he he he.