To some extent, everyone's in the market for a jet pack. But since Bell Labs built the first rocket belt (the correct, if less exciting, name) in 1953, potential buyers have been stymied by two problems: Rocket belts aren't for sale, and even prototypes run on modern-day fuel (as opposed to whatever the Jetsons use) — which means rocket belts can weigh upwards of 100 pounds, with only enough fuel to stay aloft for under a minute. Now, a pair of companies have solved one of these problems — rocket belts are for sale.
