驾车路径规划可以根据起终点的关键字和城市名称，获取起终点之间的驾车路线规划结果，支持返回多条不同策略的路线，每段路线包含路线长度、耗时、途径的每个路段的详细信息等。驾车路线规划还支持最多添加20个途经点。

使用示例如下：

// 构造检索参数
// 地名规划路线
BMFPlanNode from = BMFPlanNode(cityName: '北京', name: '百度大厦'); 
BMFPlanNode to = BMFPlanNode(cityName: '河北', name: '避暑山庄'); 
BMFMassTransitRoutePlanOption massTransitRoutePlanOption = 
    BMFMassTransitRoutePlanOption(from: from, to: to);  
// 检索实例
BMFMassTransitRouteSearch massTransitRouteSearch = BMFMassTransitRouteSearch(); 
// 检索回调
massTransitRouteSearch.onGetMassTransitRouteSearchResult(callback: 
    (BMFMassTransitRouteResult result,  
      BMFSearchErrorCode errorCode) {   
        print(`跨城公交检索回调 errorCode = ${errorCode}, result = ${result?.toMap()}`);  
        // 解析reslut，具体参考demo 
    });  
// 发起检索 
bool flag = await massTransitRouteSearch.massTransitRouteSearch(massTransitRoutePlanOption);// 构造检索参数
// 地名规划路线
BMFPlanNode from = BMFPlanNode(cityName: '北京', name: '百度科技园'); 
BMFPlanNode to = BMFPlanNode(cityName: '北京', name: '中关村');
// 驾车检索参数设置   
BMFDrivingRoutePlanOption drivingRoutePlanOption = 
    BMFDrivingRoutePlanOption(from: from, to: to);
BMFDrivingRouteSearch drivingRouteSearch = BMFDrivingRouteSearch();    
// 检索回调
drivingRouteSearch.onGetDrivingRouteSearchResult(callback: 
    (BMFDrivingRouteResult result, BMFSearchErrorCode errorCode) {   
      print(`驾车检索回调 errorCode = ${errorCode}, result = ${result?.toMap()}`);  
      // 解析reslut，具体参考demo 
    });  
// 发起检索 
bool flag = await drivingRouteSearch.dringRouteSearch(drivingRoutePlanOption);