You've got the car. You have forked out your hard earned for that expensive exhaust. You now want to make a symphony of noise all around you, but the question is where are all the tunnels?
Scouring maps and looking on the Internet for them to incorporate on a drive can be a long and painful process unless you're 'in the know' - and even then you may miss some.
There are hundreds of them across the UK, yet no one has actually plotted them on a map - until now...
UK Road Tunnels
I've teamed up with PistonHeads to plot all of them across the UK (they have agreed to make it a sticky). If you know of some road tunnels, help out your fellow petrolheads by signing into a Google account (setting one up takes only a few minutes) and plot it on the map with the following details:
Direction: [direction of travel]
Description: [speed limits, safety cameras, likely times of traffic, etc]
Next step: Go out and make some noise!