The short version
TwisterX Progression Guide: Vehicle Ladder & Unlocks: TwisterX progression runs on three tracks that money connects: free civilians (75–110 MPH) teach the craft, interceptors climb from the Storm Piercer (reported $50K) through the Dominator line to the TIV 2's reported 235 MPH deployed threshold, and radar trucks run DOW 3 ($200K) to RAXPOL ($325K) to the DOW 6 ($500K). The MDS unlock chain runs through the NPC Rise at RUSH HQ, and the endgame is the Lancer 2015 at $10,000,000 — reduced from $30,000,000.