We needed a robot for a research project related to human-robot interaction (specifically for user interface design/usability). The robot would be custom build to carry a sprayer and the human operator would use the user interface to remotely navigate the robot in the field, select and spray targets (in our case grapevines). The Summit XL platform was best fit for this application. Its high mobility, its ability to carry up to 20kg of weight (the sprayer), the fact it could be customized to our needs (i.e. have a front and rear camera), its small size and high quality were its advantages over other platforms we explored.