Screecher Pedalcycle

Excellent, one wonders why it has taken so long to make one of these?! When I was a kid they switched from horse drawn milk floats to electric milk floats, that was back in the 50s!!! Seems like no progress has been made since then. They had no solar back then, just batteries & the batteries were not as good as they are now; those milk floats covered a large area carrying a lot of weight! What happened from then until now???!!!
Keith.