i have to drive about 30minutes to work and have found that i would use a tank of petrol in about a week and i have to use premium (normal wrecks the fuel guage) which can cost about $70. i prefer riding to work which isn't quicker but is more enjoyable and cost effective. i can then spend the $70 on more bicycle equipment like, lights and more winter clothing.
Commuting via bicycle isn't practical for me. Working shift work at the Airport, I don't particuarly fancy the idea of getting up for work at 3am on a Sunday morning to ride to work. Neither does finishing a shift at midnight and riding home.
I dont have much choice either. By car, home to work is a 1hour and 15 min trip and an hour and a half back again (140km round trip) with a 6am start. Hate to imagine what time id have to leave to ride along the dark Princess Freeway. The only way I handle the cost is LPG.
You got my sympathy. I hugely enjoy riding to work, I'd not easily go back to driving a car again. The small hours do suck for riding, however there is the advantage of almost no traffic so you can really hammer at maximum speed.