This car makes for a wonderful driving experience, especially on long trips. The sport package is a must have. These cars can be fairly reliable if scheduled maintenance is kept up, however, it's not a Honda Accord. If you're planning on purchasing a used E38, do your research. Suspension, cooling, and braking system repairs can be costly, and it's very helpful to know how to tell if the previous owner has kept up on these things. If you're an educated and savvy vehicle owner, you'll find that a used 7 series is a nearly impossible to beat combination of styling and performance for the price, even when figuring in maintenance
Sport transmission, navigation (sometimes), adjustable seats.
Ugh...who puts a cassette deck in a 2001 vehicle? Also, the nav system is hit and miss. Sometimes I love it, but it's gotten me pulled over before because it sent me the wrong way down one way streets. Just pretend the cupholders don't exist, otherwise you'll accidentally break them.