Shout off while driving on freeway.Pulled over,it started right up,

Check engine light BEFORE it shut off? How many miles on engine? check dealer first ..Be prepared with VIN # so they can check for recalls , updates , warranty status etc. Also be prepared to answer questions about maint. history & other symptoms/changes in driving conditions.

Newer Forester have had issues with crankshaft position sensors going bad intermittently . I'd advise looking into that first