In "Columbo And The Murder Of A Rock Star," when Columbo gets in his car to re-create 
theway the killer faked his alibi with the automated speeding ticket, Columbo says: 
"Y'know, in all the years I had this car, this is the first time I took the top down."

Well,...not quite true. Columbo is typically adding a bit of drama to the occasion.

But although Columbo's car was a convertible, it was a very rare occasion when he took 

the top down. Here are the only scenes where we saw Columbo's  car going topless:


 
Last Salute To The Commodore:

 With Bruce Kirby, Robert Vaughn, and "Mac" (driving)


 
Lady In Waiting:

Getting a burger with Leslie Nielsen at a drive-up joint

The Most Dangerous Match:


Taking the killer for a ride

Columbo And The Murder Of A Rock Star: 
When Columbo gets in his car to re-create the way the killer faked his alibi


Short Fuse: 
With Roddy McDowall and William Windom in back (very brief shot!)

 
Columbo And The Murder Of A Rock Star: 

Starting test-drive; and later, a top-down victory drive