I've always been impressed with the design of the early Penny Farthing bicycle. High upright seating, great style, marvellous engineering (in times where gears were not invented) and one of the first human powered transportation. Some ardent PF cyclists have even toured around exotic places with them and is fascinating reading on CGOAB.
.Pic courtesy of CGOAB
Fast forward 2010, Dr Grant Ryan, a Mechanical Engineer from Christchurch, New Zealand has come up with what I think is a brilliant solution to modern portable transportation.
Check it out and let me know your thoughts... a bit pricey at US$4500 but good innovations don't come cheap. Weighs less than 10kg and has a range of 10km, a bit limited but more than enough for city commutes.
ps: Thanks Elaine for pointing me to the Yike Bike!