My plan is to fix a couple of those magnets to a disc, then getting a Starbuck mug, the ones that look like a paper cup, and put that disc in the bottom.

 

Then I'll place it on top of my car like I forgotten it while getting in and then drive slowly around downtown Seattle. If anybody tries to get my attention, I'll wave back at them all cherry like.

Be sure to take lots of video. Pics or it didn't happen. 

For extra credit, get an old laptop, gut it, put magnets in it and place it beside the coffee cup.

 

Wonder if that would work at highway speeds? Have to find a car willing to get the scratches.

 

Thinking closed laptop and coffee cup on the trunk lid. Hopefully the cop wont write a ticket

Thinking closed laptop and coffee cup on the trunk lid. Hopefully the cop wont write a ticket

 

I had the same thought -- I DO think there's a good chance a policeman would pull you over;  although I doubt he/she would write a ticket UNLESS he knew you had done this intentionally 

 

... of course, when you're struggling to lift them off the car, that might just be a bit obvious !!

 

Wonder if that would work at highway speeds?

 

The catch is believability. If I see a car going 60 on the interstate with a Starbucks cup on the roof, I'd think something was pretty fishy about that cup.