if the pedaling could charge the mobile too...

Phones power bike rental scheme: "Anyone wanting to use an Oybike signs up and pays a £10 annual fee, then uses their mobile phone to unlock a bike for as long as they need.
The phone receives a pin number to unlock the bike at the start of a journey and a second one to lock it at the end and to determine how much the rider is charged."

OYBIKE CHARGES
0 - 15 minutes = 30p
16 - 30 minutes = 80p
31 minutes - one hour = £2
One to eight hours = £8

OyBike