Use Taxis, Save the planet!

While listening to BBC radio five this afternoon I heard an environmentalist recommending the use of Taxis over the purchase of a car!
He made some valid points;
It's cheaper to use Taxis for the average person than to buy/lease and run a car over a five year period.
If more people used Taxis rather than run their own car, the benefit to the Environment with the reduction in "greenhouse gases" would be immense.

So GO ON! do the right thing......... USE TAXIS!