[Christ]

Might work - but don't leave your foot depressing the clutch while you're coasting, just use neutral.

If you leave your foot on the clutch, you're overheating the clutch release bearing - it wasn't meant to be constantly engaged, only to spin very fast for short periods of time. It will fail.

Also, with many cars, if you hold the clutch in, and it's not properly adjusted (non-hydraulic systems) the clutch disc itself can overheat and the friction material can disintegrate, leaving you unable to move the vehicle under it's own power.