Sigma's new 12.12 model Topline bike computer includes an unusual feature that might appeal to bike commuters: it calculates how many gallons of gas the rider has saved by using a bike instead of a car.
The 12.12 model's functions also include a clock, speeds, distance, trip time, temperature, backlighting and adjustable contrast,?low battery indicator and an integrated storage chip for data backup during battery changes.
The computer package includes a speed transmitter, handlebar mount, spoke magnet, battery key.
MSRP: $64.99 (wireless) or $44.99 (wired).
Source:
http://www.bicycleretailer.com/new-products/2013/03/15/sigma-bike-computer-tracks-gas-saved