Talk with a lawyer! Read the 60days warranty in detail if there is a item about speed! I am not a lawyer but there shouldn't be such an item in a regular warranty. By the way 100mph is nothing for a Mustang GT. I recently see 150mph with my 97 GT, everything is great (as today). I am not an expert about Mustangs but there should be a harddisk or a huge memory to store all the speeds at certain dates? I don't think that there is such a mechanism. I only heard a storage (log) about the failures such as airbag faiure , ABS failure etc stored on a microchip that you can see with a electrocic device. It shouldn't cover mps dates or 180degree turns or number of times you open the door etc. This is not a plane with a blackbox, it's just as fast as a plane
.By the way, is there a clock that handles date in Mustang's (somewhere inside hood). This date issue must be answered by an expert.