When I wrote this problem I was very pleased with myself for having thought of the "clever" bonus question. After all it includes a bit of web work (using mapquest) and a little geography (listing the states).
About halfway through the week I realized that I missed a more important math question that I could have used for the bonus! Do you know what it is? Did you actually include it when you worked this problem with your students?
Here is what I should have asked: What is the average speed over the entire imaginary trip?
Answer: 58.947.... or about 59mph Do you agree with that? Check my calculations.
I hope that you will use this extension when you review the problem with your students.