Carry-Freedom Y-Frame: 2.7% paid for itself since 07-11-2011
Car use displaced: 24.5 miles
CO2 not emitted*: 7.3kg
I found a Carry Freedom Y-Frame going cheap** to compliment my new bike. Chief Accountant is not impressed though, despite buying it from my personal discretionary budget.
I figure though that if I'm disciplined with use, it will easily pay for itself in the near to mid term. Then I can have an extravagant party at Peter's Yard to celebrate the world of towed cyclecraft...
I need to ride 895 miles to break even***.
* For what it's worth I thought I might record the carbon approach too. The CTC says on average a car puts out 30kg of carbon per hundred miles driven. Ours is probably less efficient than that, and the trailer will displace only stop-start urban traffic, not highly favourable motorway driving - but it makes a useful baseline.
** The trailer cost £170 (RRP £220). Other definitions of cheap are available!
*** According to the AA, the marginal cost of a mile driven in our car is just over 19p. That being so, 895 miles will cost £170. This favours the car since, again, only stop-start urban traffic is being displaced, not "average" motorway driving.