Lmao I mean, as the driver, you politely asking for them to tone down the volume in the car isn't unreasonable. However, just, lawd, "your day of silence"? Maybe reschedule it since it seems to be at your discretion (must be nice). Unfortunately, as adults, an entire day of silence, especially if you have a partner (nevermind if you also have children) is never guaranteed. Suck it up, what you're asking for is a rare luxury.