Elvis did 4 shows in Uniondale in 1973 at the Nassau Veteran's Coliseum from June 22nd (evening show) to June 24th (matinee show). I believe these photos show Elvis leaving New York on either June 24, 1973 after his matinee show or in the morning of June 25, 1973 on his way to Pittsburgh for his show that night

Thanks to E-Cat for the photos