Q: 4s crushed and wet

If the device is able to be repaired you're looking at $199.00. If the device is considered to be beyond economical repair, that price could change or you'll be looking at buying a brand new device. I would try and plug it into a computer and see if you can get a backup to roll. If it's showing signs of life, you may be able to sync it with a computer and iTunes. That way you'll at least have your data.

Apple won't even attempt to do a repair of that phone and since you removed parts from it (there is no "memory card") they probably will not offer an out-of-warranty replacement for $199. Look for a new iPhone.

Do you know what backups you have…

• Did you ever connect it to iTunes, have you done this recently?
• Did you have iCloud backups enabled?

Your priority is to dry it out. Wrap it in a soft cloth to cover the open ports & seal it in a bag of dried rice or another desiccant like silica gel or kitty litter. Leave for a few days to dry before connecting to iTunes - power can short out a moist device. If it was totally soaked you may need to leave it for a week, refresh the desiccant after a few days.

If you ask Apple they will replace it for the fee that has been mentioned - that means you lose access to the data on the device - it's an exchange. If you had a passcode set you can no longer sync to iTunes if the screen is not functioning - the screen needs to be unlocked to perform a sync to iTunes when the PIN or passphrase is active.

You can ask Apple to replace the screen, but they may offer a replacement only, be persistent if you have no recent backup. Otherwise you'll need to find another store to replace the screen & other damaged parts etc. That means Apple will no longer exchange or offer support because it voids the warranty. Water & accidental damage isn't covered anyway.

Liquid damage to iPhone or iPod isn't covered by warranty - Apple Support

P.S

iTunes lists device backups in the 'Preferences > Devices tab', mouse over items in the list to see the date of any backups if they are not visible.

iCloud will list the backup size in 'System Preferences > iCloud', click the manage storage button & scroll through the list. I suspect this is different for 10.10, so dig around in that panel (this is for Mac OS 10.9). Windows may not be able to show the iCloud backups.

Given that it was run over by a car while it was raining I'm not sure drying it is crucial.