This concept was done fairly far into production, and a lot had been established already. The image was done to help lighting and framing of the sequence. I was lucky to be able to use the amazingly gross infected model by Yingkang Luo (https://www.artstation.com/artwork/oAOEk4). And the gorgeous Ellie model made by Soa Lee (https://www.artstation.com/artwork/L32nqK).
Throughout the whole project I was able to use the vehicles so many times, made by the one man vehicle team, Matthew Trevelyan Johns (https://www.artstation.com/trevelyan).
And a huge thanks again to Keith Paciello for helping me learn the animation tools in the studio!