I get to surf my workplace parking garage's four stories, twice daily. On the three steep ramps, my Tanaka 47R engine screams. A guy who parks near me was heavily into gokarts decades ago. He said my engine sounds like a gokart engine. It really IS a gokart engine; Tanaka uses it on their Powerkarts and BladeZ scooters.
Riding up the parking garage ramp, the Tanaka is VERY loud. As it crests the ramp, I slack it down to an idle and shift to third gear, then downshift to second gear as I attack each succesive ramp. At the top of the last ramp, The engine is turned off, and the bike rolls about 150 feet to the rack.
For me, riding down the parking structure is not exciting at all. It's basically a "pre-flight" time for the engine to warm up and for me to listen for any unusual bicycle noises. The engine noise is kept to a minimum, so as not to enrage the cagers.
At the ramp's very steep exit, I use my access card to raise the arm blocking the way out. The brakes are put to a good test because of the steep descent. As soon as I leave the parking structure, I let her rip.