IF it met the requisite FAA guidelines, had a saitisfactory pre-flight checklist, etc., etc. sure. Building a bicycle is NOT rocket science at this price point. In general most light aircraft employ VERY old low tech materials. My first airplance was fabric covered and had an air cooled opposed 4 cyl motor not unlike an old VW Beetle. It is not like the average general aviation aircraft is filled with carbon fiber and titanium!

Obviously to build a very lightweight bike requires more exotic materials and construction methods. But we aren't talk about the upper echelon of 'bents here. That is not to say a Huffy would be my first choice in bikes but my mom still has an old fixie Huffy she has ridden for the past 30 years and other than tires and tubes its been reliable as heck.

It goes without saying even a good manufacturer can make a POS and a mediocre one can sometimes get lucky too. Just look at Kia and Hyundai 10 years ago. Fair car makers at best and now they are nipping at the heels of Honda and Toyota.

It doesn't have to cost a fortune to build a decent bike. It is all in the scale at which they are produced for the most part. Basic economics are at work here. China mass produces domestic bikes by the hundreds of thousands and they sell them dirt cheap there. If some company thought it was viable to produce bents in sufficient numbers the price would come down immensely but so far it doesn't seem the target market has really reached the numbers necessary for this yet. It seems that there are a few pockets in the US where a lot of people ride bents. I happen to live in one of them but still normal bikes seem to vastly outnumber them on the roads and trails.

Trialwarrior- I just saw one of the KMX's (different model though) in a LBS. It looked pretty cool. Only thing I didn't really like was the little guards to keep your hands from hitting the wheels. It seemed even with the guards you had better be careful.