Originally Posted by dflwshaft

... would anyone go to the time and expense to retrofit BMW NAV. It is second only to the I-Drive in poor user interface design and functionality. I'm a degreed Industrial Designer who managed North and South America for the largest Geographic Informations System company in the world and I didn't even order NAV on my new X5. Oh, I think it looks cool too to and who wants not to have ALL the toys (even if that's what they are, lol), but that's $1800! Am I wrong?