*** This post was edited by CoasterFANatic87 on 7/22/2002. ***
1] think of "generations" like car models. Toyota has a new model or car for 2002, the Matrix. If they make modifications to the Matrix for 2003 then that year's model will be the second generation Matrix. Regarding freefall towers, Intamin's original towers [such as those at SFMM and CP] went through some design changes, hence the usage of the term "first generation freefall" and "second generation freefall." Sorry, I am not familiar enough with the model to tell you what those modifications were.
2] King Cobra at PKI has been dismantled. The same model TOGO Stand-up at PKD remains.
3] Mr Freeze @ SFOT is a launched sit-down shuttle roller coaster. Your friend is obviously confused. Try www.rcdb.com for pics of Mr Freeze at SFOT [or the identical model at Six Flags St Louis].
"There's nothing sweeter than a bowling ball with a liquid center" - Homer Simpson
Generations are like software versions: major modifications are usually termed a "generation" like a software "version" (as opposed to a patch or minor modification)...on to the specifics of Intamin drop-rides...
the first-gen freefalls are like Demon Drop at CP, Great Gasp at SFoG to name a couple....MANY parks have them, and they are clearly identifiable by those hulking cars dropping down the L-shaped hill, then clanking (banging?) back to vertical orientation after going through the roll-out at the bottom of the drop.
the second-gen freefalls are like those at KW (PittFall), SFA (Tower of Doom) and PCar (Drop Zone). Vertical towers where the bogey thing comes down and locks into the *sides* of the towers, lifts the rows of seats, and releases them to drop the riders.
third-gens are like PKI's Drop Zone or even Acrophobia, where riders sit in a ring around the tower....exceptional fun....(some may tell you that Acro is a 4th-gen drop ride, but I didn't think the tilt was THAT big of a difference)....so as you see, opinions DO vary....