The brand-new second-generation AutoPC also includes a DVD/CD player, 5.1 audio (for quality comparable to a home theatre), multi-zone capabilities (so you can listen to music and get directions while the kids watch a movie) and large-screen support (so you can look at a map in the front seat and even control the radio on-screen and connect a large screen in the rear). The first generation starts at $1,300 and the second generation starts at $2,500.
RSB Innovations of Salem, Oregon, offers Under Seat Security Drawers that lock and can be installed under one or both front seats in pickups, vans and SUVs. They're a good place to stash a purse or other valuables while you're at the beach, shopping or at school — or when you give your vehicle to a valet parking attendant. They $129 to $139 and can be viewed or ordered at www.underseatstorage.com
For true keyless entry, try Tap Lock from TapTronics Inc. in Santa Cruz, CA, at www.taplock.com. TapLock allows you to tap a code on your vehicle's window to unlock its doors. About $99, plus installation.