Speed Sensor problems of the 2013 Nissan Altima

While driving my car and merging onto a busy interstate, the check engine light, traction control, and blind spot monitoring error lights all came on the car would not accelerate. The rpm gauge would go up and the car would try to go, but it just wouldn�t. I almost got rear ended by a semi truck because my car wasn't able to go or move out of the way. I left it in a shop for over a week and apparently it's something to do with the cvt transmission and speed sensors. I contacted Nissan and all they would tell me was that they did an extended warranty on those transmissions up to 130,000 miles, however my car was roughly 2,000 miles over this and was not covered by that warranty. They told me all I could do was replace the transmission and that was going to cost me roughly $4,000. I'm almost scared to drive it anywhere there's lots of traffic or fast moving traffic for fear of someone running into me. Also when all of those dash lights come on, the traction control isn't working and I've had to drive in the rain several times. I just believe it's overall dangerous and Nissan isn't doing anything to fix the problem for cars that have somehow managed to make it over 130,000 miles. I know several people who've had similar things happen with their Nissan car that has this transmission. I do believe it is a safety issue because it malfunctions at any given time just randomly. I can be driving and it's fine one minute, the next thing I know all of these dash lights are lit up and the car won't accelerate.