Sounds like Coast Guard just suspended the search as it went down a few days ago. Long cross country, at night, over water, no flight following. Looks like the plane was a Dakota. If the tail number is correct, relatively new ownership. Person that was supposed to meet him called after he no showed.
https://boston.cbslocal.com/2021/11...ch-cape-cod-coast-guard-nauset-beach-orleans/
https://boston.cbslocal.com/2021/11...ch-cape-cod-coast-guard-nauset-beach-orleans/