They're far from common, but we've definitely seen modular GPS concepts before. If this leaked FCC documentation is any gauge of reality, however, TomTom will be making those wild, wild dreams into something entirely more tangible. The DUB1 is an up and coming navigator which is designed to operate in a snap-in portal located in your nearest dashboard or in the palm of your nearest hand. It's likely that said portal will be a double-DIN aftermarket accessory, but we suppose TomTom could nail down contracts with automakers to provide it from the factory. There's little left to do but wait and see, but given
