Today's cars have so many electronic components that a Saturday mechanic can barely do a thing to them. I changed the spark plugs in our old Honda Odyssey a while back - what a hassle! The engine was covered to prevent me from accessing anything. After getting the cover off the plugs (and the wires) were located under a panel that required a torx driver to remove. When I could finally see the plugs they were located such that unless you had a bevy of socket extensions and universals you weren't going to get them out. At the time I couldn't help thinking that all of this extra effort was merely to keep me, and my wrench wielding friends, from doing something that Honda could charge upwards of $50 / hour for. Now Volvo is thinking about not even offering a hood that opens! Talk about shutting out backyard mechanics.