Every person operating a milk truck, bakery truck, catering truck, laundry truck, cleaning truck, towel service truck, or vehicle used for the transportation of mineral water, purified water, distilled water, or any syrups or soft drinks, or other vehicle used for the purpose of selling any product or for the purpose of picking up or delivering any property within the city, shall pay a business tax of twenty-five dollars per year for each such vehicle; provided, however, that nothing in this section shall apply to persons operating such vehicles incidental to carrying on of another business specifically taxed under other provisions of this chapter; provided further, that any person subject to the business tax provisions of this section may, at his option, elect to be taxed under Section 4.02.020, classification "A," based on gross receipts that are derived from or attributable to activities engaged in within the city. (Ord. 2141 § 9, 1977: Ord. 2063 § 2 (part), 1975).