While my wife was traveling on a local neighborhood street my infiniti g37 it began to accelerate excessively. she tried stepping on the brake but the car kept accelerating. she came to the end of the road at an intersection doing about 40 mph and turned to the left to avoid going into a house. in doing so she hit a sewer drain with her right front tire causing the vehicle to go almost airbourne. she came to rest without striking the house. the steering wheel airbag went off. *dsy