G1 is literally a death threat in the car, with its lack of voice dialing capabilities.
On the other hand, it is also a privacy threat, being used without the screen lock pattern.
Whereas it is barely possible to get away with placing a call with the screen unlocked (Menu-Menu-Home-Direct Dial, if it is configured, and Menu-Menu-Call-get-lost-and-die, if it's not), it is even more difficult if there is a lock pattern.
A good start in the right direction could be, for example, automatic unlock to the home screen upon connecting with a specified Bluetooth device.
Still, this doesn't make it safe enough, just reduces the threat. I do wish someone's got enough time and money to come up with the docking station.
Or, for Pete's sake, fix the voice dialer...