DETROIT—For decades, General Motors has used additive manufacturing to create functional prototypes of vehicle components.

Additive manufacturing, or 3D printing, is too slow and expensive to mass-produce parts, but not for an ultra-low-volume car like the Cadillac Celestiq.

Press Release Kind Designs, the Miami-based startup 3D-Printing the World's first Living Seawalls™, announced the closing of its Seed 1 funding round, led by Overlay Capital with participation from ...