When we started towing a boat behind our car, and were consequently limited to 60mph rather than 70mph on major roads in the UK, I found I rather liked travelling that way. Yes, it took a bit longer, but it was more relaxing.

And I've noticed that, whether due to a growth in wisdom or to a decline in testosterone -- I prefer to think it's the former -- I now tend to drive rather more slowly than I did a decade or two ago. Rose suggests I may just be subconsciously aware of slower reaction times...

But this has led me to propose Quentin's Law of Optimal Velocity, which is the maximum speed in miles per hour at which you like to drive, and is given by:

Vmax = 120 - age

but I freely admit that this is based on a rather small sample size (errm... one, to be precise) so would be grateful for more data.

Does it correspond to your own experience?