public async Task <IActionResult> Get()
        {
            var customers = await _repository
                            .BrowseAsync();

            return(Json(customers.Select(x => new {
                x.CustomerId,
                x.VehicleId,
                x.RegNo,
                x.LatestPingAt,
                Status = (x.LatestPingAt.HasValue?x.LatestPingAt.Value.ToUniversalTime().AddMinutes(1) > DateTime.UtcNow:false)
            })));
        }