I'm 53
Semi-retired project management / supply chain consultant
My driving truck is a '50 Chev 1300 which I've owned for 4 years
My "project truck" is a '51 Chev 1300 which I've owned for 2 years.

In the interesting but useless category -
I had some time to kill and did a little analysis on the data supplied to date:
the average age of 63 respondents is 41 (thank goodness we have several university students involved here!) wink
the average age of our vehicles is 50.8 years old
The average year of manufacture of our vehicles is 1950.