What does the cryptic crossword clue "Boring type of car – those who have one are certain to stay in the house (4,4)" mean?

The wordplay uses a charade (building blocks). SAFE (synonym="boring") + SEAT (synonym="Spanish car brand") = SAFESEAT The answer is SAFESEAT.

Boring type of car – those who have one are certain to stay in the house (4,4)

Guardian Cryptic #29382 | 7 Across | 2024-05-14 flower