Tim Taylor Would Have Cleaned Up

Trivia league drama: due to a laptop crash, The Powers That Be have lost the first two weeks' worth of scores. I remember our score from week one, I think I know our score from week two, but we finished way behind those weeks, whereas we've won the two weeks since. What to do, what to do....
Anywho, we did finish in first again this week, by a single point. It would have been more, but someone (i.e., me) overruled the four other people at the table who were "pretty sure" they knew how many stars were in the Little Dipper, thus costing us a 5-point question. Of course, if the first two questions of each of the first three rounds hadn't been "guess the number"-type questions, this wouldn't have occurred. Having thought about it for a week or so, those questions bother me a lot more than what I consider overly specific questions;. After all, in a team of 4-6 people of a certain age, someone is bound to have seen Gone In 60 Seconds; how many people are going to be able to guess the first year that Chevrolet made the Corvette?
Our misses, plus two lucky guesses, and the final, which fits into the puzzle content that I am so woefully behind on:

1. What was the first Japanese car produced in the United States?
2. How many glasses (8 oz.) of milk does the average cow produce in her lifetime?
3. How many stars make up the Little Dipper?
4. What was the maximum horsepower of the original Porsche 911, which was produced in 1964?
5. In what year was the first Corvette produced?
Final:
What is the next number in this sequence:
2, 10, 30, 68, 130, 222, ???