I got 146 on the test (probably could have gotten higher if I didn't space out on two of them, one of them being a little unfair due to relying on your knowledge of names of countries, cities, oceans, animals, and such), but I decided to cheat a little bit and do it again. It most definitely is based on your speed, since I got 200 the second time around. So yeah, I probably would have got a 150+ with THIS specific test if I were at full attention.
edit: Which, by the way, this test must be inaccurate. A more reliable IQ test would actually have more questions and be more exhaustive in the types of questions it has. They would also strive to take out some biases rather than actually create them.
Put this in just as proof of how easy it is to get a high score here without really working for it.