Investment in Electric Boat Manufacturer On May 14, 2021, we purchased $3,400,000 in Debentures from Limestone. Limestone is a North American designer and manufacturer of recreational and commercial powerboats. The Debentures bear interest at the rate of 10% per annum and mature in three years from issuance. We entered into an agreement pursuant to which Limestone agreed to purchase 25 powertrains from us, subject to the completion of satisfactory testing from Limestone, of which it has currently purchased ...