I grew up surrounded by Messerschmitt KR200, Heinkel Kabine and BMW Isetta "Bubble Cars". Those with a family could have a Reliant Robin, or the more sporty types could own a Berkley Sports. These micro cars abounded in the UK in the 50's and 60's and provided much needed mobility at a price point that was manageable. The Reliant became the second most produced GRP car in history. Sadly, whilst innovative and economical, these small cars were not necessarily designed to be involved in crashes, as things like single front doors might indicate. However, I'm sure that the concept of providing transport at a minimal size and price still exists, and now that EV's are here, it may be possible to enjoy them once again.