Yes, but if you cheat with a car in the 100m pretty much everyone will know. Although this has been done with longer races. ( https://en.wikipedia.org/wiki/Frederick_Lorz)
This hasn't quite happened yet but it's getting closer in the 400m and I expect long jump will also at some point have disabled athletes perform better than able bodied ones (Disabled long jumpers all jump off their prosthetic leg). The debate about allowing disabled athletes into the "general" events is growing.