Ypsilanti v. General Motors

GM (defendant) sought tax abatements from Ypsilanti (plaintiff) for plant improvements, and at a public meeting GM's plant manager said the completed project would allow continued production and that continuous employment could be maintained; Ypsilanti granted two tax abatements. GM later decided to move manufacturing out of the plant entirely. Ypsilanti sued for breach of contract, promissory estoppel, unjust enrichment, and misrepresentation; the trial court found no contract but ruled for Ypsilanti on promissory estoppel.

Whether one engaging in exaggeration when making assurances makes a promise that is enforceable in an action for promissory estoppel.