I saw the sign below at a grocery store parking lot. Why wasn’t I warned sooner?

All these years,I’ve been careening wrecklessly around all these parking lots, not realizing a pedestrian could run into me and damage my vehicle! Thanks for finally giving me the heads up!

Why is “wreck” spelled with a W but spell check wants me to change “wrecklessly” to ” recklessly”? Which is correct?

Happy hump day!