If your son wants to be an imagineer get him involved in the amusement industry NOW. The Amusement Industry is one of the hardest to break into if at all, you pretty much have to know someone. I am only speaking with experience from the roller coaster design/engineering in general side but I am sure Imagineering is no different.
College is a good first step, but a mind is not everything. Have him get involved in the industry, work at a local amusement park, especially in operations, so that he can learn how rides work, and what improvements can and should be made,
check out an IAAPA trade show or two, IAAPA is the International Associate of Amusement Parks and Attractions and EVERY company involved in the amusement industry is a member including Disney, this is a great way to network. The annual trade show is the week before Thanksgiving every year, and in 2006 will be held in Atlanta but after that will be going back to Orlando.
Once he has connections, he cannot be shy about using them. Keep in contact with roller coaster designers, disney staff, even another park's PR director they all can help. The Amusement Industry is like a large extended family they all know each other, and they can all help him.
The big firm that disney has used recently is Vekoma International, they designed and built Expedition Everest, its a Dutch Company they WILL have a booth at IAAPA.
Use resources online and fan organizations to become a genius on the amusement industry, he should know what a chain dog is, what an anti-roll back is, who Arrow Dynamics was, what a roll back is, what the difference between a fin brake and a skid brake is. These are all basics when it comes to amusement park stuff, if he doesn't already know these things he needs to, to get anywhere in this industry.
Utilize
www.RCDB.com (Roller Coaster Database), American Coaster Enthusiasts (
www.ACEONLINE.org), Ultimate Roller Coaster (
www.ultimaterollercoaster.com). I know he wants to be an imagineer but this is the amusement industry and the roller coaster is king of the castle.
He also needs a LOT of luck. Good luck to him.
Jennifer