Rate the following argument fragment on its writing, argument, and language skills:
Evidence: We have had extreneous experience with sensors and radar, two things that are almost required for a driverless car in the upcoming future, to make one. In the 1980's, more than 30 years ago, automakers used speed sensors at the wheels in the creation of antilock brakes (Ph. 5). With all of the experience gained, we now can make real driverless cars. Infact, we all ready have. Google has had cars that could drive independently under specific conditions since 2009 (Ph. 2). Their cars have driven more than half a million miles without a crash, but roadblocks and problems do lie ahead for a true "driverless car".

Score: 2