Tim Streater wrote:

In article ,
(Steve Firth) wrote:

wrote:

I tend to stick to 56 (what wagons are governed to ) and leave plenty of
space. It might add ten minutes to a longer journey, but leaves one more
relaxed and not needing time to unwind afterwards, making up for the
slightly extra journey time.

I generally drive at the legal limit, using cruise control. This means
that my longer journeys take 16 hours of driving. If I drove at 56 mph
it would add eight hours to my driving time.

Your ability to do maths is a bit suspect.

It's not maths it's arithmetic.

I think you will find that arithmetic is maths, but maths is not
arithmetic.