American cars

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Across
  1. 3. Presidential transport it seems (7)
  2. 4. Some French coast seen on the name-badge (7)
  3. 6. Mum at the beach to kids -"Cover up, ...!"(6)
  4. 11. Sounds like a boat made for the marshes (9)
  5. 14. Would get destroyed by the sea, for sure (8)
  6. 15. Cross blades with this piratical sword (7)
  7. 17. Don't tangle with this kitty (7)
  8. 18. Flip for a flop - was avoided, now hunted (5)
  9. 19. Different heading for a young dog's car (9)
  10. 20. Mono-colour product originally (4)
  11. 23. A model who only uses a credit card (7)
  12. 27. Reappoint air cond mixture for these cars (7)
  13. 28. Isobar special wind caused this labelling (7)
  14. 29. Driving across the USA (7)
  15. 31. Sounds like an AB's front row command (7)
  16. 33. Sooted and confused, it all split up (2,4)
  17. 36. Dodge these snakes (5)
  18. 38. Messenger for the number one planet (7)
  19. 42. Combat transport - now a fun beast (4)
  20. 43. Could be avoiding the Wild West town (5)
  21. 46. Curd at a bar is an A-1 idea as a mix (9)
  22. 47. Wanderer found in venom adder bite (5)
  23. 48. Hurricane birthplace of Mick the rocker (9)
  24. 49. High revving religious racer (6)
  25. 52. Sun voted in as a result of lobbying (7)
  26. 53. Found in the Bay of Biscay near Florida (8)
  27. 54. Car named for the great view it gives you (9)
  28. 55. Answer found by grant or in order(10)
  29. 56. Ironic city of cars (7)
Down
  1. 1. Barrels,gears,exhaust (4,4,2)
  2. 2. Quickest teacher at my old school (11)
  3. 5. Made for the salon set - nail biting (7)
  4. 7. Beach model attached to a hideaway (3,3)
  5. 8. French streaming named this beauty (7)
  6. 9. Shape of fingers on a guitar is this one (4)
  7. 10. Mixed lab jar following top horse ranch (10)
  8. 12. Southern type? (5)
  9. 13. Mix of Big Mac or a pie (6)
  10. 16. Prince among cars (7)
  11. 19. Car for trappers near the river (6)
  12. 21. Initially greater means cooler vehicles (3)
  13. 22. Suitable for a swagman (7)
  14. 24. Maybe something you do on moving stairs (8)
  15. 25. This fits all the rules to be raced (3)
  16. 26. Could be a stormy weather harbinger (11)
  17. 27. English origin for a pilgrim's car? (8)
  18. 30. You will be left out for this ride (5)
  19. 32. Sounds like an artist's morning tinting (7)
  20. 34. Chariot for the city of gold (2,6)
  21. 35. Sounds like one for your parents (10)
  22. 37. A French family product (9)
  23. 39. Provides a very woolly ride (3)
  24. 40. Breaking badly so it got filmed (2,6)
  25. 41. The French landed gentry car (2,5)
  26. 44. I am in to make a quick buck for this car (5)
  27. 45. The sunburst model (4)
  28. 50. Sally loves equine transport (7)
  29. 51. Could be a Phoenix copycat beast (8)