PROFIT: You really need to go see one of those 4110s before you buy it. I really think you'll be disappointed. Compare its specs with the 4121 I have and check what they're going for on EBay. Also the programmable button (only 2) require tapping the function button first, so it ends up being a two step process which I find annoying. I have mine setup for volume up/down and its a PITA. Wish I could reprogram them all! I miss the brightness control on the front of my 3500.
MATRIX: I also have a Fujitsu car adapter like Tutbocad, but I have a three way (ACC/OFF/ON) so it autoresumes in ACC mode and is on all the time when ON from the battery. The internal battery on this thing i amazing, my screen shuts of 1 minute after switching to internal power (ignition off), I have XP setup with S3 standby after 4 hours and then it hibernates when the battery reaches 25% remaining. I also like that I can take it with me EVERYWHERE!
I modded my dock like Turbocad modded the tablet: my dock is half in the dash (base and DVD) with the docking clamps set just above my radio in the center console. This affords me quick insert and removal as well as swivelling the tablet between landscape and portrait. All the CarPC connections (power, TV, DVD, FM, XM, GPS, joystick, cameras, etc.,) are inside the dash which still leaves 2 USB and a PCMCIA slot available on the tablet for quick connecting things like my Canon Digital camera (to download pics) or the occasional bluetooth, or jumpdrive.
Misterbutts: Try contacting Motorcity via PM he's had good results bumping up the light on some LCD screens.