What does the cryptic crossword clue "Estimating sales bamboozles carmakers there (6,8)" mean?

The wordplay uses an anagram. anagram of CARMAKERS + THERE = MARKETRESEARCH The answer is MARKETRESEARCH.

Estimating sales bamboozles carmakers there (6,8)

Daily Mail Cryptic #16808 | 1 Down | 2022-04-05 flower