Garmin Automotive GPS

Passed my private pilot checkride last week and now want to learn about GPS.

I've searched a bit but have found no threads pertaining to my question
- I'd like opinions or if someone can refer me somewhere...

Someone has offered to give me a Garmin Streetpilot 2610 - is there any
use for one of these in a plane? The 'official word' from Garmin is
that you can't put aviation map data into an automotive unit, but I'm
sure someone has tried...

I realize that an aviation GPS unit is idea, but would a streetpilot be
of any use?

Thanks,