Well this is going to be an embarrassing confession, but here goes -
In 2001, I traded in my 1999 Pontiac Bonneville SSEI for a Yellow Pontiac Aztek, not only did I trade the Bonneville in, but at the time I ordered the Yellow Aztek (yes I did an Employee Order Option 1). Azteks were on hold by GM and the Yellow paint was restricted, this was during Easter 2001. My dearler called the Saturday before Easter, and told me the news about the Azteks being on hold and the paint. So I decided, I was not going to wait. I logged into the GM Vehicle Ordering System and released my order number and took the yellow paint code off hold for just my Aztek only. Needless to say, my Aztek was produced and shipped the very next week to the dealer, I also gave my Aztek the highest priority to the rail-line for shipping. My dealer called the Tuesday after Easter saying GM had just confirmed that the order was produced and should be here in two weeks, he didn't know I changed that too. So in one week my Aztek was produced, shipped and received at the dealership. (My dealer still tells his employees about that).
At 1st it was cool to see people pointing at the Aztek and saying oh look an Aztek, one driver almost ran off I-64 outside Richmond Virginia when he saw it. But then I noticed people would point at it and laugh, it was time to get rid of it, so 6 months later I traded it in for a New 2002 Grand Prix GT. It remained at my dealership for 5 years, they used it as a loaner for people in for repairs.
So 2001 Pontiac Aztek was my shortest vehicle I owned, 6 months total.
1969 Pontiac Custom-S I've had the longest (25 years), had it since I was 14, could not drive it for 2 years, it was the longest 2 years of my life. This car and I are the same age, and I still love it after all this time.