Not pedaling but not bad

Algae for fuel?
http://tech.yahoo.com/news/ap/20081103/ap_on_hi_te/tec_algae_energy
A car run on air?
http://finance.yahoo.com/family-home/article/106040/Air-Cars:-A-New-Wind-for-America%27s-Roads

It's not pedaling, but the Lorax would probably like them!