The federal EV tax credit of up to $7,500, long a cornerstone incentive for electric-vehicle buyers, is slated to expire on September 30, 2025, following legislation enacted earlier this year. Have you considered an EV truck like the Sierra EV or Hummer EV? Now may be your chance to score an affordable price at O’Fallon Buick GMC near Troy, St. Louis and Wentzville.