Crankcase (pcv) problems of the 2010 Ford Fusion

Tell us what happened: my husband and I had purchased a 2010 Ford Fusion in July 2012. About 20 some days after purchase. I got into the car and started the car trying to go up my driveway and the car lost all acceleration and the wrench light came on. I called the dealership explained what happened they picked the car up and gave us a loaner to drive. The dealership replaced the throttle body. Around August of 2012 my husband, my grandson and I were driving and went to make a turn onto the highway and without warning the car lost all acceleration again placing my family in a dangerous safety situation. We called the dealership and told them what happened and they picked up the car again. This time they mentioned there was issue with wiring and the pcv valve which also dealt with the throttle body was replaced and assured me the problem was fixed. Last week my husband was driving the car on a highway and proceeded to pass an eighteen wheeler when out of nowhere the car lost all acceleration, the check engine light came on for about 15 or 20 seconds and thankfully went back into gear. My husband was going over 70 miles an hour and lost all acceleration without warning! this is an extremely dangerous safety concern. This now would be the second time it placed our lives in danger. We no longer have the car but I fear that someone else will buy this car and something worse could happen the throttle body in this car was replaced three times. Once through the manufacture, car fax reported it replaced, and once when I purchased the car. Something needs to be done to ensure the safety of these vehicles very soon before someone gets seriously injured or killed. My concern is it is very likely this car will be sold again to someone else since we took it back to the dealership where we purchased it from without having this issue fixed.