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Could you pick me up by car at 7 tomorrow morning?
Literal
Tomorrow-morning 7-o'clock [at-に] me [object-を] car [with-で] pick-up come [favor-くれ] [polite-ますか].
迎えに来てくれますか — requests the favor of 'coming to pick up.' Note the stacked pattern: 迎えに来る (come to meet) + ~てくれる (as a favor) + ~ますか (polite question). 車で marks the means. A mid-level politeness request — more casual than ~ていただけますか but polite enough for non-intimate relationships.