How, exactly, does redbull make money?

alright, the obvious answer is "they sell cans of energy drink" but you probably all know what im talking about, especially being around the world of skiing

EVERY time i go to a comp or some sort of special event, red bull is there with a huge truck giving away thousands of free drinks...in fact, their reps just walk around on the streets of every major city handing out free product left and right

not only that, they have to pay for all those redbull rep trucks and cars, and they have TONS of other promo vehicles that are insane...like, for instance, i once saw an armored personnel carrier that they had bought from the army for god knows how much, which they then spent at least another 30 grand transforming into a fully functional mobile DJ booth that fully folds back into the vehicle...

oh, and here's a fully mobile drop-in ramp truck...yeah, that's practical

http://www.ollieindoorskatepark.com/images/400_Red_Bull_Tank.jpg

not to mention the fact that they spend tons of money putting on events for nearly every "action sport" i can think of, even going so far as to invent THEIR OWN sports to sponsor, which i can imagine is fantastically expensive to support from a marketing standpoint alone

oh yeah, and they sponsor practically every single major athlete from every "xtreme" field i can think of...moto x riders, boarders, skiers, skaters, olympians, pilots, base jumpers, professional snorklers, mountain climbers...you get the point...so HOW DO THEY MAKE MONEY when all they seem to do is spend it on marketing...? anybody? anybody here actually WORK for redbull? i need answers...

i mean im sure they sell a ton, and i know a TON of bars have contracts with them to use redbull as mixers for trademark drinks, but i just dont see how it's possibly enough to pay for all the merchandising they do...