Looks like it was VERY poorly installed. It has multiple cracks..almost an H covering both bays. It is easy to trip over several of the 1/2" + raised cracks. Quotes to jack hammer out and replace slab are many thousands. Any quick fixes(temporary fixes) like sledge hammer out highest spots and use QuickCrete to create temporary, no-trip surface...until I bite the bullet and replace the slab? Thanks.