Bike vs Car Running Costs

We were thinking what was the difference between riding a bike or driving a car.

Besides the environmental and health benefits, what exactly was the economic advantages?

So based on commuting 10km to work, and 10km back over a 5 year period, this is what our science dept. worked out:

Bike Cost, Hybrid $649, Helmet & Accessories $170, Servicing 4 x yr, Tyres 2 x yr, Tubes 4 x yr

Total running cost 5 years Bike $2,730

Car Cost, Medium 1.6L to 2.6L, $30,000, Servicing, Rego, Fuel, Tyres (Data from RACV for 2011)
Total running costs 5 year Car $52,000





So per day       Bike $1.60  vs  Car $19.28


So which one would you choose?