Here’s something you can do if you’re driving north on the Western Express Highway. North is away from the city. Drive on the stretch between the Andheri flyover and the Jogeshwari flyover. Just before the exit for Jogeshwari and JVLR, there’s a bump. This isn’t a sharp bump that could wreck a car, it’s gradual enough to not want to slow down for. The road gradually slopes upwards and the suddenly drops to slope downward. You should be driving down the highway at a minimum speed of 60 km/h when you hit this bump. This is hard during peak traffic hours but it’s possible either late at night or early enough in the morning. There’s a chance that you can even do it at the right time during the afternoon. If you do it right, you’ll experience a split second of free fall and it should feel like going over the top of a rollercoaster. I haven’t been on a rollercoaster for really long and maybe i’ve forgotten what it feels like, but I always brace myself when approaching this bump and go “wheee!” as I go over it.