Yes I have. Not what you would normally consider a safari but it actually is - I have visited North West Trek in Seattle, Washington State many times. As many of the animals are dangerous, you actually do the trip on a bus similar to that in the picture. This park promotes conservation and education by showing native North West American wildlife and their natural habitats. They have a huge range of animals - bison, elk, caribou, bighorn sheep, moose, deer, bears, lynxes, bobcats, cougars, foxes, wolves and many more. I just love this place, and each time I visit Seattle (usually every couple of years to visit family) I always have that on my list of things to do.