This Flash Auto icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,300 icons, all in the same style and quality.
It's a black outline of a lightning bolt positioned straight up and down, with one jag in the lightning bolt. A black capital letter A in a sans-serif font is in the top right corner, with the top of the letter A level with the top point of the lightning bolt.