HYUNDAI ELANTRA PAINT

I Was Parked In A Parking Garage And It Seems That Someone Must Have Backed Into Me (when I Was Not There) And Did Some Damage To My Paint....

When A Paint Job Is Done Is All Of The Old Paint Removed Or Is It Scraped Down To A Certain Extent And Just Painted Over?

When I Get Rock Chips In My Paint Do They Have To Be Treated Carefully Or Get Worse Or Will They Just Remain As They Are No Matter What I Do...

I Have A Rather Small 2 Car Garage. I Keep 2 Cars In It. I Am Always Extra Careful Not To Open My Car Door Enough As To Touch The Other Car...