We trek for a bit longer before familiar front ends start to appear with stacked quad headlights. Even though it's a sign we're getting close, it means I need to pay even closer attention to the details. Some cars have the window marked with the year, but between dust and the sun, it's hard to discern more often than not. One big indicator that does catch my eye is a padded vinyl roof – which is present on a drab green four-door just off to our left ahead.