keeping iPod in the car permanently

[Xtempo]

Can you keep an iPod in the car permanently? I was thinking of buying this and leave an extra iPod in the car in a place where it wouldn't be simple to find.

I might not do this though. I recently upgraded my Sony and Dual speakers to Pioneer TS-G1644R. I even had to redo the wiring a little bit.

I'm kinda leaning to do this since I'm pretty much done with Sony (unless its PS, PS2, PS3, PSP maybe Vita and PS4 but I don't have them). I am finally getting rid of my MiniDiscs so I don't care for a Sony Bus system anymore since everything seems to be fitting nicely on my iPod.