Trivia: At the end of the movie, the bus that Sandra Bullock nearly hits is numbered 2526. The bus in the first Speed movie was numbered 2525.
Trivia: The tanker Eindhoven Lion is named for director Jan de Bont's hometown of Eindhoven in the Netherlands.





Answer: There is no logical reason for it and it is purely for cinematic theatrics. It's a movie myth that cars, boats, etc. immediately explode upon impact. In real life, explosions rarely happen that way.
raywest ★