As far as free nitrogen fillups go, I would imagine when we drop our car off at the shop for service and leave it there all day while we're at work, a handy compressed air hose would most likely find the valve stem of one of our low tires rather than a nitrogen hose if they knew we weren't there possibly watching through the waiting room window......
On a side note, I do really like the real-time tire pressure monitoring gadget. It will be a lot nicer to use than crouching down in the snow with a tire gauge once a month and cursing because in the process of checking the air in the tire I accidentally let out a couple of pounds so even if it was okay in the first place, I still have to drag out the hose and shoot some air in it. I'm pretty anal about tire pressures in anything, even my lawnmower, so do religiously check tire pressures at least once a month.
It only displays the pressures when you're driving, but as long as you remember to do it then, it's easy to monitor the tires.
I suppose shops are trying to make some extra money with the nitrogen gig. Vehicles are a lot more dependable these days: change the oil regularly and don't drive them like a maniac and they'll last a long time.
We had 178,000 miles on the '05 Durango we traded in for this Nissan. We never had to do anything to it besides regular services and replacing the camshaft and crankshaft sensors a few months ago but that only cost about $100. The only major services were a transmission service and replacing the plugs/wires at 100K.
My '03 Tacoma has 190,000 trouble-free miles on it and it's never been in the shop for anything but regular scheduled maintenance. I will be the one who finds out exactly how many miles it's good for as I plan to keep it until it dies. Once I retire and don't drive it as much, there's a possibility it might outlast me.......
Reminds me of this article I saw on The Onion the other day:
Toyota Recalls 1993 Camry Due To Fact That Owners Really Should Have Bought Something New By Now - The Onion - America's Finest News Source