While mostly known for pure arcade action, the console manuals (Dreamcast, PS1, N64) actually provide a backstory:
You receive a mysterious letter inviting you to join the Hydro Thunder Racing Association (H.T.R.A.) , an underground, high-stakes racing syndicate. hydro-thunder
You are a world-renowned powerboat champion who has grown bored with standard racing. While mostly known for pure arcade action, the