Kobestrongly dislikes SUVs and is appalled that so many are on the road. He proposes to eliminate the federal income tax and replace it with a $50,000 annual tax per SUV. Based on the number of SUVs currently owned in the United States, he estimates the tax will generate exactly the amount of tax revenue currently collected from the income tax. What is wrong with Kobe's proposal? What type of forecasting is Kobelikely using?