sentence: That would be an excellent alternative to the current means of transportation , since it is fast , is n't affected by traffic , and it is generally cheaper ( since it relies on electricity ) .
modified: That would be an excellent alternative to the current means of transportation , since they are fast , are n't affected by traffic , and they are generally cheaper ( since they rely on electricity ) .
transformation: PRON, VERB:SVA, VERB:SVA, PRON, VERB:SVA, PRON, VERB:SVA