public async void GetDrivers(int maxPassengers)
{
viewModel.AddLimo(Constants.Sedan);
viewModel.AddLimo(Constants.Suv);
viewModel.AddLimo(Constants.UtilityVan);
viewModel.AddLimo(Constants.DeluxeVan);
viewModel.AddLimo(Constants.StretchVan);
viewModel.AddLimo(Constants.Stretch);
viewModel.AddLimo(Constants.LimoBus);
viewModel.SelectedRideOption = viewModel.AvailableRideOptions[0];
await DatabaseHelper.GetLimosInRadiusInTime(20, 10, Convert.ToDouble(viewModel._originLatitude), Convert.ToDouble(viewModel._originLongitude), maxPassengers);
while (DatabaseHelper.driversInPastMin == null)
{
}
this.availableDrivers = DatabaseHelper.driversInPastMin;
}