In general, your rhetoric could be fine-tuned to make the speech more appealing to the both the teacher and the students. This includes improving the flow, making better transitions between ideas, etc.
I can't tell what your thesis is
Unless I'm reading this wrong, he's trying to make a case for the taking of driver's tests every three years.
Anyway, your body should be longer. It's too short to make a compelling case to support your argument. Pound the idea home from all angles without being repetitive. I'm also a bit skeptical about the use of one of your first statistics, "Annually, the number of fatalities due to car crashes in the U.S. is over 40,000." I'm sure it's correct, but couldn't these crashes be due to other factors (e.g. alcohol)? I mean, technically, it's fine, but again, you should add much more support to your argument.
Make a concession or two as well. That is, introduce the opposite side's arguments and explain that is, in a way, rational. Then, using the opposing argument as a springboard, explain why your idea is ultimately better.
Even in your conclusion, try not to repeat yourself too much. You want to drive the idea home but with a continuous flow of new facts and ideas. Make sure your audience is really thinking about what you're trying to say through your conclusion instead of saying, "In conclusion..." This will make a lasting impression.
There are other, more specific things, but this should be a good starting point.