I don't see any brakes?
Being naturally clumsy I've never tried anything like that, but it strikes me that "pedalling" with my hands while trying to coordinate balance standing up and operating brakes to turn would be far too much for me. I'd foresee a lot of falls.
Have you tried any kind of a model?
Probably in the UK. But there's a big ol' world outside of Blighty
I don't get it.
Perhaps you've never done such a thing for school or University but I'd bet you know many young people who have done or are doing similar.
The "products" don't have to be "real". As with a lot of things, the value lies not in the end result, but in the process.
There's been some pretty direct feedback on the thread but it was, at least, feedback.