Jordan fired this volley in news:xQdRo.5880$MF5.3599
@viwinnwfe02.internal.bigpond.com:

So, what would be the size and weight of a spring that would be needed
to propel a one ton car 50 miles?


Well... in THAT technology it was only 20lb., or so. In ours, it would be
MUCH bigger.

OTOH... most cars don't weigh a ton anymore, unless my M-I-L is riding in
the back.

LLoyd