 Back in Eric Tutterow's electric truck, it's time to drop off a trailer full of chips, just a short drive up the freeway from the Modesto plant where we started. And I don't know if this is particularly the answer to all of our energy issues, but it's a step in the right direction. It's definitely an eye-opener to me. Heavy-duty trucks travel more than 60,000 miles a year on average, so this journey is just a blip in Tutterow's rearview mirror. But at least it's one without a carbon footprint.