A method comprising: a vehicle-diagnostic server receiving a status message, wherein the status message comprises a source identifier associated with a first vehicle-diagnostic client system and comprises a vehicle identifier that identifies a particular vehicle-type of a given vehicle communicatively coupled with the first vehicle-diagnostic client system; the vehicle-diagnostic server receiving a first data-request message, wherein the first data-request message comprises a source identifier associated with a second vehicle-diagnostic client system and comprises vehicle identifier tags that identifies the vehicle-type of a vehicle from which captured vehicle data is desired and client setting tags for configuring a vehicle-diagnostic client system to capture vehicle data; the vehicle-diagnostic server modifying a client register in response to receiving the status message, wherein modifying the client register includes modifying the register to indicate that a vehicle of the vehicle-type from which captured vehicle data is desired is accessible via the first vehicle-diagnostic client system; the vehicle-diagnostic server searching the client register in response to receiving the first data-request message, wherein searching the client register includes searching to identify any vehicle-diagnostic client system that has access to a vehicle of the vehicle-type from which captured vehicle data is desired; and the vehicle-diagnostic server generating a second data-request message in response to the vehicle-diagnostic server identifying that the vehicle-type from which captured vehicle data is desired is accessible via the first vehicle-diagnostic client system; the vehicle-diagnostic server transmitting the second data-request message, wherein the second data-request message comprises a destination identifier associated with the first vehicle-diagnostic client system and comprises the client setting tags for configuring a vehicle-diagnostic client system and the vehicle identifier tags that identifies the vehicle-type from which captured vehicle data is desired; the vehicle-diagnostic server receiving a first requested-data message, wherein the first requested-data message comprises a source identifier associated with the first vehicle-diagnostic client system and comprises vehicle diagnostic data; and the vehicle-diagnostic server transmitting a second requested-data message, wherein the second requested-data message comprises a destination identifier associated with the second vehicle-diagnostic client system and comprises the vehicle diagnostic data received in the first requested-data message, in response to the transmitted second data-request message. a vehicle-diagnostic server receiving a status message, wherein the status message comprises a source identifier associated with a first vehicle-diagnostic client system and comprises a vehicle identifier that identifies a particular vehicle-type of a given vehicle communicatively coupled with the first vehicle-diagnostic client system; the vehicle-diagnostic server receiving a first data-request message, wherein the first data-request message comprises a source identifier associated with a second vehicle-diagnostic client system and comprises vehicle identifier tags that identifies the vehicle-type of a vehicle from which captured vehicle data is desired and client setting tags for configuring a vehicle-diagnostic client system to capture vehicle data; the vehicle-diagnostic server modifying a client register in response to receiving the status message, wherein modifying the client register includes modifying the register to indicate that a vehicle of the vehicle-type from which captured vehicle data is desired is accessible via the first vehicle-diagnostic client system; the vehicle-diagnostic server searching the client register in response to receiving the first data-request message, wherein searching the client register includes searching to identify any vehicle-diagnostic client system that has access to a vehicle of the vehicle-type from which captured vehicle data is desired; and the vehicle-diagnostic server generating a second data-request message in response to the vehicle-diagnostic server identifying that the vehicle-type from which captured vehicle data is desired is accessible via the first vehicle-diagnostic client system; the vehicle-diagnostic server transmitting the second data-request message, wherein the second data-request message comprises a destination identifier associated with the first vehicle-diagnostic client system and comprises the client setting tags for configuring a vehicle-diagnostic client system and the vehicle identifier tags that identifies the vehicle-type from which captured vehicle data is desired; the vehicle-diagnostic server receiving a first requested-data message, wherein the first requested-data message comprises a source identifier associated with the first vehicle-diagnostic client system and comprises vehicle diagnostic data; and the vehicle-diagnostic server transmitting a second requested-data message, wherein the second requested-data message comprises a destination identifier associated with the second vehicle-diagnostic client system and comprises the vehicle diagnostic data received in the first requested-data message, in response to the transmitted second data-request message.