If they pull me over for speeding or something and ask if I consent to having my car searched, I'd say, "holy SHIT no, NO, omg no no no no no fuck me no no no no". And then if they fall into my trap I'll tell them it's just pepcid AC and we'll have a big laugh.
Off the top of my head...
You might checks the local laws on how many days you can be held without charges. In the USA, its somewhere around a handful of days on average. Don't have a job that will fire you if you are a no call/no show for 7~14 days.
Depending on where you are incarcerated, you might even get a bill for the time you spent in lockup, the food you were offered, the paperwork you filled out, etc. I you had a cell phone on your person, just assume that everything on it has been cloned and is now sitting in some local law enforcement database. (Usernames, passwords, saved texts, anything "deleted" whose file sectors haven't had new data written to them.)
You vehicle will be towed, searched, and impounded. You will have to pay the impound lot fee out of your own pocket. Unless you drive a really nice car that you get into the shop often, things will most likely be missing and/or broken when you get it out of impound. The impound lot will not be responsible for things that you "claim" to be missing or find broken and you've already proven you'd say untrue things to cops once with this bit.
lmao the cops will steal your shit, flip it, and make you pay for the privilege