The Can of Goo Dilemma: Puncture Kits, Foam and When to Stop Driving
Lift the boot floor on plenty of modern cars and you'll find a compressor and a bottle of sealant instead of a spare wheel. Here's what that kit can realistically fix on a London street, why foam can turn a simple puncture into a new tyre, and the point where you should stop and call a garage rather than press on.