"YOU CAN SAVETIME BY DRIVING SLOWLY"

This came up when strategising for our M25 electric car challenge a month ago. Some folk think that by driving slowly to use less energy, they'll spend less time charging and arrive faster. They're wrong. Except in a few limited circs, anyway.

- Paul Horrell

Drive at 70mph. In three hours, if the motorway's clear, you've done 210 miles. Your cautious friend in an identical car drives at 60, taking 30 minutes longer. Even if you're unlucky and can find only a 50kW charger rather than an ultra rapid, in half an hour you can take on 25kWh, which is about 80 miles' worth, just as your friend rolls up to the charge st