Problems with 2010 Nissan Maxima STEERING

I purchased my maxima 2010 that came with the sports package, used back in september of 2011. from the day i purchased the vehicle, the steering wheel was always shaken when i break on the highway from driving 60 miles or over. on november of 2012, my nissan maxima 2010 push start button would not start. i had to get it towed to a nearest nissan dealer. they wanted to replace the whole steering wheel ($700) because their defense is due to wear and tear. is this really possible on a fairly new car because my hondas,since 2004, had never had to have the steering wheel replaced. i have researched and found that there are many complaints about this issue on different websites. i would really like to know if this possible issue is due to manufacturer's side. *tr

I'm unable to turn on accessory ignition or start car due to defective steering wheel lock mechanism. part #48700-jk000. manufacture is unable to supply me with a new one. this is a known issue by nissan motors, not just for maxima, but all intelligent key models. currently can't even roll windows up. *tr

Accelerated vehicle to 50 miles up to 70 miles on highway. vehicles steering wheel pulled to the right as if the suspension had to much power for that mileage. *tr

The car has electronic steering and is a safety hazard in my opinion. the car will drift to the right on its own and when you steer it back to prevent running off the pavement the car veers to your left and would run off the road to your left if you do not correct it. on a straight stretch of road holding the steering wheel straight the car will dart to the left and then to the right without moving the steering wheel. on the test drive i rode in the passenger seat and could feel the car moving to the left and right, the service mgr said he could feel it also but said that was because of the crown in the road. this problem becomes a safety problem when on narrow four lane roads, you must constantly fight the steering wheel to keep the car on the road or keep from running into the car on your left. i have took the car to the dealer and was told that i would just have to get used to this because of the electronic steering is different from my previous cars. i was told there was no adjustment that could be made to correct this problem. i am 70 years old and have driven a few cars in my time and can tell you this car should not drive the way it does, it is just an accident waiting to happen. it feels as if the car is trying to drive itself without turning the steering wheel, there seems to be a problem with other vehicles with the electronic steering - ie: toyota and chevrolet and just wondering if they all have the same electronic steering components.. i sent nissan an email of my concern and dissatisfaction by the dealer saying nothing could be done to correct this problem. i can't believe they are blaming their problem on the crown in the roads!! *tr