Detroit diary: when launches go wrong - Kia
Celebrating this fact, a basketball hoop was wheeled onto the stage and several former legends of the game came out to play.
Even if you didn't know the game, you couldn't help but understand you were in the presence of sporting icons, as a booming announcement outlined the stars' career credentials.
'Here's Spud Webb, member of the NBA Allstars!'
As some eye-catching young ladies threw Kia-branded headbands into the crowd, the locals whooped with delight at the prospect of watching the old hands throw some hoops.
Up they stepped… and, one by one, they missed.
At the conclusion of this slightly embarrassing episode, the basketballs were signed and thrown to the crowd.
But even the man from Kia had to concede: 'After that performance, they're not going to be worth much on eBay.'
Lesson five: Nothing lasts forever.