Nice find! It increases the eligible base price and includes used vehicles but will mean more vehicles counting toward the 10,000 vehicle cap. Might ultimately mean an extension of only a few more months.
"Retail Sales and Use Tax. The sales and use tax exemption is made permanent and is extended to include used vehicles as well as medium-duty and heavy-duty trucks that meet certain power requirements. To qualify for the exemption, all new and used vehicles must meet an additional new requirement of being predominately used for travel within Washington over their usable lifetime. The exemption is extended to new or used passenger cars, light-duty trucks, and medium duty passenger vehicles. An exemption is added for new or used medium- and heavy-duty trucks for up to $125,000 of the vehicle's selling price or the total lease payments made plus the selling price of the leased vehicle. The vehicle base model price at which the sale or lease of a vehicle is not exempt from sales tax is changed from more than $42,500 to more than $50,000 for passenger cars, light-duty trucks, and medium-duty passenger vehicles; or more than $150,000 for medium and heavy-duty trucks. Once DOL titles 7500 vehicles, the funding for the sales and use tax is shifted from the Multimodal Transportation Account to the Clean Energy Account."
