General Motors Co. and Honda Motor Co. Ltd. are expanding their partnership to make a series of “affordable” electric vehicles together based on a new global architecture that will use GM’s next-generation Ultium battery technology, the companies said Tuesday. Honda and GM want to start producing millions of these EVs, including compact crossovers, globally in 2027. Specific prices of the EVs were not addressed in a press release. The move builds on a North American strategic alliance the companies announced in September 2020 for product development, purchasing and potentially other collaborat…